الموضوع: $$ .,.,. Beautiful Microscopic Images from Inside the Human Body .,.,. $$

4. Hair cell in the ear







Image: Wellcome Photo Library, Wellcome Images
Here’s what it looks like to see a close-up of human hair cell stereocilia inside the ear. These detect mechanical movement in response to sound vibrations.



5. Blood vessels emerging from the optic nerve





Image: Freya Mowat, Wellcome Images
In this image, stained retinal blood vessels are shown to emerge from the black-coloured optic disc. The optic disc is a blind spot because no light receptor cells are present in this area of the retina where the optic nerve and retinal blood vessels leave the back of the eye.



6. Tongue with taste bud



Image: David Gregory & Debbie Marshall, Wellcome Images
This colour-enhanced image depicts a taste bud on the tongue. The human tongue has about 10,000 taste buds that are involved with detecting salty, sour, bitter, sweet and savoury taste perceptions.

7. Tooth plaque






Image: David Gregory & Debbie Marshall, Wellcome Images
Brush your teeth often because this is what the surface of a tooth with a form of “corn-on-the-cob” plaque looks like.


Remember that picture of the nice, uniform shapes of red blood cells you just looked at? Well, here’s what it looks like when those same cells get caught up in the sticky web of a blood clot. The cell in the middle is a white blood cell.




9. Alveoli in the lung



Image: David Gregory & Debbie Marshall, Wellcome Images
This is what a colour-enhanced image of the inner surface of your lung looks like. The hollow cavities are alveoli; this is where gas exchange occurs with the blood.



10. Lung cancer cells




Image: Anne Weston, Wellcome Images
This image of warped lung cancer cells is in stark contrast to the healthy lung in the previous picture

11. Villi of small intestine




Image: Professor Alan Boyde, Wellcome Images
Villi in the small intestine increase the surface area of the gut, which helps in the absorption of food. Look closely and you’ll see some food stuck in one of the crevices.



12. Human egg with coronal cells




Image: Yorgos Nikas, Wellcome Images
This image is of a purple, colour-enhanced human egg sitting on a pin. The egg is coated with the zona pellicuda, a glycoprotein that protects the egg but also helps to trap and bind sperm. Two coronal cells are attached to the zona pellicuda.



13. Sperm on the surface of a human egg





Image: Yorgos Nikas, Wellcome Images
Here’s a close-up of a number of sperm trying to fertilise an egg.



15. Human embryo and sperm




Image: Dr. David Becker, Wellcome Images
It looks like the world at war, but it’s actually five days after the fertilisation of an egg, with some remaining sperm cells still sticking around. This fluorescent image was captured using a confocal microscope. The embryo and sperm cell nuclei are stained purple while sperm tails are green. The blue areas are gap junctions, which form connections between the cells.



15. Coloured image of a 6 day old human embryo implanting



Image: Yorgos Nikas, Wellcome Images
And the cycle of life begins again: this 6 day old human embryo is beginning to implant into the endometrium, the lining of the uterus.